Coil-winding apparatus



P 1, 1953 G. STEVENS COIL-WINDING APPARATUS 4 Sheets-Sheet l fl/QWZW". GEORGE STEVENS NQ 56c 3% 2 O Filed June 11, 1946 Sept. 1, 1953 G. STEVENS 2,650,768

COIL-WINDING APPARATUS Filed June 11, 1946 4 Sheets-Sheet 2 3 llllllllllllllli: ITI V MIAEI GEORGE STEVENS HIS b Zfoaweg Sept 1, 1953 G. STEVENS 2,650,768

COIL-WINDING APPARATUS Filed. June 11, 1946 4 sheets-sheet s GEORGE STEVENS ,1

Sept. 1, 1953 e. s'rEvENs $650,768

COIL-WINDING APPARATUS Filed June 11, 1946 4 Sheets-Sheet 4 HIS ATTORNEY Patented Sept. 1, 1953 UNITED STATES oFFicE 2 Claims.

This invention relates to coil-winding machines and the like and is concerned primarily with the winding of a coil of generally cylindrical formation and made up of a series of overlapping sections in each of which the turns of the coil are reversed with the complete coil having ends that are sonically shaded and arranged substantially parallel to one another.

One object, among others, is the provision of a machine embodying universal coil-winding mechanism and progressive coil-winding mecha nism, operable together, i. e., at the same time.

Another object, among others, is the provision of improvements in both universal and progressive coil-winding mechanism.

still another object is the provision of a ball bearing for the mandrel in said mechanism.

Another object has been the provision of improvements relating to the rack for operating the progressive stroke of the mandrel.

Another object is the provision of adjusting means for adjusting the stroke of the rack, said means including a stop clamp.

Still another object has been the provision of the foregoing in a manner which is relatively inexpensive, and simple to make, assemble and operate.

These and other objects and advantages will appear and be brought out more fully in the following specification, reference being had to the accompanying drawings, in which:

Fig. l is a top plan view of the winder.

Fig. 2 is a front elevation of the same, with the face plate removed.

Fig. 3 is a detail sectional view of the gear housing on the line 3-3 of Fig. 2.

Fig. 4 is an elevational view of the gear housing. with the back cover removed.

Fig. 5 is a detail sectional view of the gear housing, taken on the line 55 of Fig. 1.

Fig. 6 is a detail sectional view of the gear housing, taken on the line 66 of Fig. 3.

Fig. 7 is a plan view of the machine arranged for universal winding.

Fig. 8 is a plan view of the machine arranged for universal winding.

Fig. 9 is a side elevation of the supply spool, feeding rollers and brake drum.

In accordance with the present invention, a coil of substantially cylindrical formation is wound. The coil itself is made up of a series of overlapping sections in each of which the turns of the coil are reversed with the ends of the coils taking the form of substantially parallel cones. To accomplish this, the core of the coil is moved progressively in one direction during the winding operation but the wire feeding means is reciprocated.

For the purpose of illustrating the principle of my invention, I have shown a flywheel pulley Ii), mounted on a shaft II, in walls 12 and IS.

The shaft ll supports a chuck [4 at one end, and is provided with a driving thread I5, which is adapted to drive a gear l6, having bearing on the shaft I 6a. Thereby, the shaft II drives a train of gears and operates a rack l8 back and forth.

The train of gears l1 includes a primary gear I la on shaft I 5a, and the train also includes intermediate gears 58 and 59, on studs 56 and 57, on gear support 56, to operate gear no, on shaft 49, to operate the rack is, through the rack pinion I'ic. Rotation of the pinion He moves the rack it toward the right, as viewed in Figures 1 and 2, during its working stroke, carrying with it the chuck I4 through the bracket 14, guide 15 and key It. The reverse reciprocation of the rack I8 is manually effected as hereinafter pointed out.

Shaft ll also has a spiral gear 73 adapted to operate a gear IS on shaft l9a, which drives a train of gears.

The train of gears includes a primary gear 20,, on shaft Isa, an intermediate gear 2| on pin,

54, and gear 2m in front of gear 21, also on pin 54, looking at the cam side of the machine, as shown in Fig. 6.

The train also includes cam gear 22 on cam shaft 22a, to operate cam 23, the cam 23 being adapted to reciprocate the rod 26 as hereinafter pointed out. Guide members 24 and 25 are secured to the rod 26, and reciprocate therewith, the guide members being provided with guide rollers 24a and 25a over which the wire strands to be wound are trained.

Also fastened to the rod, are thimbles 2i and cone spacers 28, which are employed for the purpose of placing the guide members 24 and 25 in proper position with reference to the rod 26, dependent upon the kind and size of the coil to be wound.

One end of the rod is slidably supported in a suitable bearing carried by a standard 29, which also has bearing means which slidably supports the rack IS, the standard 29 being mounted on a base 30.

The chuck M supports a coil core on a mandrel 32, supported in bearing 33 in tail stock 34. The bearing 33 is slidably mounted on the bar 31.

Mandrel-removing means are provided, which include a handle35, pivoted at 36 and connected to bar 3! at 38.

When the handle is swung to the right, looking at Fig. 1, the bearing is pulled against the spring 39, to allow the mandrel to be removed.

Attached to the rack-driving shaft 49 is a crank handle 4|, for manual adjustment of the rack i8, and return of same when the limit of travel has been reached.

The cam 23 operates the rod 26, through a yoke 52 to which the rod is fastened, mounted upon the sliding rod 43, which, in turn, is mounted in bearings 45 and 45, in walls I2 and [3.

The cam 23 reciprocates the rod 25, and the short supporting rod 47 has a spring 48 to takeup the slack. Reciprocation of the rod. 26, and of the guides 2 1 and 25 and rollers Elia and 25a,

carried by the rod 26, results in the wire strands connected to the core, carriedv by the mandrel 32, and drawn from the supp-1y spools, being wound upon the core in convolutions inclined first in one direction, and then in a reversed direction, thereby eifecting. the so-called uni-v versal winding heretofore referred. to. During reciprocation. of the rod 2 3,. the mandrel. 32,. carrying the core, is adapted to. be advanced or progressed longitudinally with respect. to the. rod 26, through movement of the rack H3, The rack i8 carries the chuck l4 and mandrel 32. with it by reason of engagement of means on the rack l8, hereafter mentioned, with the chuck t ll,

It will be understood. that for different. coils,v different ratios of gears are required, and gear.- changing means are provided.

In Fig. 2, l have shown the gear support 9, and in Fig. 4, I have shown the gear support at.

There are also provided slots 5| for bolts and nuts 52, to secure the gear support 49 to the rack support At the other end, gear support 49 has. a pin extending through gear. 2| and 2|a.

The gear support 55, mounted on the base 55 of wall has a pair of pins 56 and 51- extending through intermediate gears 58 and 59. in train ll.

For counting turns, a spindle G has av gear G i, driven by gear 13.

The spindle is shown located in bearings 62, fastened in removable rear wall 63.

The spindle may be connected to suitablev counting mechanism, as shown, for counting the number of turns, etc.

The gearing is enclosed in walls forming. a head 54.

The head 8 includes removable front wall 65,, wall wall and integral upper walls 61., lower wall 68, and middle wall 69.

The front wall 65 is held in place by studs and thumb screws 76, or other suitable means.

The rear wall 63 is shown held in place by screws l and the rear wall 66 is shown held in place by stud screws and thumb nuts 12..

The shaft II is splined to a shaft Ha, on which the chuck I4 is mounted.

The shaft Ha has a ball-bearing connection with a bracket M, which is secured to a guide E5 for the rack E8.

The guide 75 has mounted therein a key 1.6, which extends into a groove ll in the chuck it, to limit the lengthwise movement of the chuck, but not to interfere with the rotating movement of the chuck.

Also provided on the rack i8 is a limiting stop i5, consisting of a pair of brackets 19', which are gpertured, as at 85', and bolted together by bolts Spool-holding means (Figure 9) include a bracket 82, an intermediate bracket 83, a spindle holder 84, a spindle and a circular guide plate 86.

There are also included braking means, including springs 81 and wood brake 88.

Secured to the spindle holder, is a roller support 89, over which the wire may be led to one of the rollers 24a and 25a.

One or more spindle holders for additional supply spools and rollersmay be provided.

As will be manifest to those skilled in the art, both a universal and progressive Winding are combined in the aforesaid machine. In the simplest mode of applicants invention a single coil is wound on a single core.

When it is desired to wind a coil, a core for the coil is placed upon the mandrel 32. The mandrel 32 may readily be detached for this purpose by pressing back the resiliently held bearing 33, and removing the mandrel from the chuck l4. Once the core is in position on the mandrel 3.2,. the latter is replaced in the chuck I4 and bearing 33., and upon rotation of the chuck. M, the mandrel 32 will be rotated, which will. rotate the core. The guide members 24 and 25, carrying the guide rollers 24a and 25a respectively, are adapted to be reciprocated by the rod 26, adjustment andpositioning thereof being effected by employment of the thimbles 21 and spacers 28 heretofore mentioned. The rack It may be moved in a left-hand direction as viewed in Figure l, to any selected position at which it is desired tostart the winding, through manipulation of the handle 4|, to rotate the gear 40 in a direction the reverse of that in which it is normally driven by the power means.

With the wire strand or strands from the spool or spools 86 trained over the guide rollers 24d. and 25a, and secured to the core on the mandrel 32, the power is turned on. Through gears l6, I6a, Ila, Ill; and He, slow forward motion toward thev right is imparted to the rack l8. The rack |8' through the bracket 15, picks up the chuck I4, and the parts associated therewith, and carries them slowly forward, these parts being rotated by the spline shaft Ha, which also permits the forward movement of the chuck I4. During this movement the wire strands are wound progressively along the rotating core carried. by the mandrel the strands being pulled from the spools. 86 over the guide rollers 24a and 25a. and about the core. Simultaneously withthe. movements described, through the shaft gears I9, 20, 2| and 22, the cam 23 is rotated, and. through the: yoke 42 transmits reciprocatory motion to the rod 261. This in turn imparts like motion to the guide rollers 24a and 25a, so that as the mandrel 32 isv traveling longitudinally forward, the guide rollers 2.4a and- 25a move back and forth, and cause winding of the wire to incline in one direction with respect to the rotating core, and then in areverse direction, the number of reciprocations of the guide means during the longitudinal travel of the core, controlling the number of reversals of the winding on the core. Thus both universal and progressive winding of the wire upon the core are carried out simultaneously; At the end of the run for one" coil, the parts are replaced for the next run by rotating the handle 4|, which through the rack H1 restores the chuck l4 and other parts to their initial position. As already pointed out the idler gears 58 and 59, or cam driven gear 2la may be adjusted to cut out one or the other of the two operations so that they may be employed independently.

While I have illustrated and described the preferred form of construction for carrying my invention into efiect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variation and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a device of the kind described, means for winding a coil progressively, said means including a rack; a stop for limiting the travel of said rack; and a handle for returning said rack, after it has reached its limit of travel, to its original position.

2. Apparatus of the character described, comprising: a rotatable member upon which a strand is to be wound; means for rotating said member, including a splined shaft and a chuck carried by said shaft for supporting said member: a rack; means for advancing said rack; means 6. operatively connecting said rack with said chuck to effect advance of said member; a reciprocatory element; and means carried by said element for guiding said strand back and forth along said member during advancement thereof by said rack.

GEORGE STEVENS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 676,875 Chaize June 25, 1901 976,698 Ryon Nov. 22, 1910 1,862,333 Cole June '7, 1932 1,865,970 Schweiter July 5, 1932 1,927,547 Gordon Sept. 19, 1933 2,131,148 Siegenthaler Sept. 27, 1938 2,153,996 Selvig Apr. 11, 1939 2,234,356 Reiners Mar. 11, 1941 2,301,693 Garrott Nov. 10, 1942 FOREIGN PATENTS Number Country Date 512,639 France Oct. 18, 1929 

